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55555 DNA (2001 YR2)
Classification: Main-belt Asteroid          SPK-ID: 2055555
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1318316337784411 4.6463e-08  
a 2.563186200274421 1.4009e-08 au
q 2.22527717581389 1.2287e-07 au
i 14.6184961004328 4.0233e-06 deg
node 280.0995571344566 1.8915e-05 deg
peri 42.6604648031952 2.4604e-05 deg
M 256.0591023511611 1.713e-05 deg
tp 2459433.265492048932
(2021-Aug-06.76549205)
7.187e-05 TDB
period 1498.886200347875
4.10
1.2288e-05
3.364e-08
d
yr
n .2401783403679665 1.969e-09 deg/d
Q 2.901095224734953 1.5855e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1732  
   data-arc span      17462 days (47.81 yr)  
   first obs. used      1972-09-15  
   last obs. used      2020-07-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44541  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:03:13  

Additional Information
 Earth MOID = 1.23187 au 
 Jupiter MOID = 2.38951 au 
 T_jup = 3.376 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6   n/a MPO468444  
diameter diameter 5.455 km 0.129 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.297   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

55555 DNA           Discovered 2001 Dec. 19 by C. W. Juels and P. R. Holvorcem at Fountain Hills.
Deoxyribonucleic acid, the sine qua non of carbon-based life, is self-replicating, plays a central role in cellular protein synthesis via RNA and is responsible for the transmission of hereditary characteristics. Structurally, DNA consists of two long chains of nucleotides twisted into a double helix joined by hydrogen bonds.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040306/MPCPages.arcLast Updated: 2004-03-08

[ show close-approach data ]
Alternate Designations
 2001 YR2 = 1972 RJ = 1999 CX69 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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